A minor diagonal matrix is one where the only non-zero entries are along the diagonal that runs from bottom most left to upper most right.
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A square matrix in which all the entries of the main diagonal are zero
diagonal
The identity matrix, which is a square matrix with zeros everywhere except on the principal diagonal where they are all ones.
The minor is the determinant of the matrix constructed by removing the row and column of a particular element. Thus, the minor of a34 is the determinant of the matrix which has all the same rows and columns, except for the 3rd row and 4th column.
Hermitian matrix defined:If a square matrix, A, is equal to its conjugate transpose, A†, then A is a Hermitian matrix.Notes:1. The main diagonal elements of a Hermitian matrix must be real.2. The cross elements of a Hermitian matrix are complex numbers having equal real part values, and equal-in-magnitude-but-opposite-in-sign imaginary parts.